view mercurial/templates/map-cmdline.compact @ 44802:e0414fcd35e0

rust-filepatterns: match exact `rootglob`s with a `HashSet`, not in the regex

This optimization yields some very interesting results in `rootglob`-heavy
repositories.

I build a test repository of the following structure:

```
root
    /<uuid>/build/empty_file
    ... repeat for 4000 entries
```

and a `.hgignore` containing the corresponding 4000 `rootglob` entries pointing
to all `build/` folders.

Rust+c `hg status` goes from 350ms down to 110ms.

Differential Revision: https://phab.mercurial-scm.org/D8491

[templates]
ldate = '{label("log.date",
                "{date|isodate}")}'

ldesc = '{label('ui.note log.description',
                      '{desc|strip}')}'
ldescfirst = '{label('ui.note log.description',
                     '{desc|firstline|strip}')}'

changeset = '{lrev}{tags}{bookmarks}{parents}   {lnode}   {ldate}   {luser}\n  {ldescfirst}\n\n'
changeset_quiet = '{lrev}:{lnode}\n'
changeset_verbose = '{lrev}{tags}{parents}   {lnode}   {ldate}   {lauthor}\n  {ldesc}\n\n'
lrev = '{label("log.changeset changeset.{phase}",
              "{rev}")}'
lnode = '{label("log.node",
                "{node|short}")}'
lauthor = '{label("log.user",
                  "{author}")}'
luser = '{label("log.user",
                "{author|user}")}'
start_tags = '['
tag = '{label("log.tag",
              "{tag},")}'
last_tag = '{tag}]'
start_parents = ':'
parent = '{lrev},'
last_parent = '{lrev}'
start_bookmarks = '['
bookmark = '{label("log.bookmark",
                   "{bookmark},")}'
last_bookmark = '{bookmark}]'